import { EModelEndpoint } from 'librechat-data-provider';
import type { TEndpointsConfig, TConfig } from 'librechat-data-provider';
import {
  getEndpointField,
  getAvailableEndpoints,
  getEndpointsFilter,
  mapEndpoints,
} from './endpoints';

const mockEndpointsConfig: TEndpointsConfig = {
  [EModelEndpoint.openAI]: { type: undefined, iconURL: 'openAI_icon.png', order: 0 },
  [EModelEndpoint.google]: { type: undefined, iconURL: 'google_icon.png', order: 1 },
  Mistral: { type: EModelEndpoint.custom, iconURL: 'custom_icon.png', order: 2 },
};

describe('getEndpointField', () => {
  it('returns undefined if endpointsConfig is undefined', () => {
    expect(getEndpointField(undefined, EModelEndpoint.openAI, 'type')).toBeUndefined();
  });

  it('returns undefined if endpoint is null', () => {
    expect(getEndpointField(mockEndpointsConfig, null, 'type')).toBeUndefined();
  });

  it('returns undefined if endpoint is undefined', () => {
    expect(getEndpointField(mockEndpointsConfig, undefined, 'type')).toBeUndefined();
  });

  it('returns undefined if the endpoint does not exist in endpointsConfig', () => {
    expect(getEndpointField(mockEndpointsConfig, EModelEndpoint.bingAI, 'type')).toBeUndefined();
  });

  it('returns the correct value for a valid endpoint and property', () => {
    expect(getEndpointField(mockEndpointsConfig, EModelEndpoint.openAI, 'order')).toEqual(0);
    expect(getEndpointField(mockEndpointsConfig, EModelEndpoint.google, 'iconURL')).toEqual(
      'google_icon.png',
    );
  });

  it('returns undefined for a valid endpoint but an invalid property', () => {
    /* Type assertion as 'nonexistentProperty' is intentionally not a valid property of TConfig */
    expect(
      getEndpointField(
        mockEndpointsConfig,
        EModelEndpoint.openAI,
        'nonexistentProperty' as keyof TConfig,
      ),
    ).toBeUndefined();
  });

  it('returns the correct value for a non-enum endpoint and valid property', () => {
    expect(getEndpointField(mockEndpointsConfig, 'Mistral', 'type')).toEqual(EModelEndpoint.custom);
  });

  it('returns undefined for a non-enum endpoint with an invalid property', () => {
    expect(
      getEndpointField(mockEndpointsConfig, 'Mistral', 'nonexistentProperty' as keyof TConfig),
    ).toBeUndefined();
  });
});

describe('getEndpointsFilter', () => {
  it('returns an empty object if endpointsConfig is undefined', () => {
    expect(getEndpointsFilter(undefined)).toEqual({});
  });

  it('returns a filter object based on endpointsConfig', () => {
    const expectedFilter = {
      [EModelEndpoint.openAI]: true,
      [EModelEndpoint.google]: true,
      Mistral: true,
    };
    expect(getEndpointsFilter(mockEndpointsConfig)).toEqual(expectedFilter);
  });
});

describe('getAvailableEndpoints', () => {
  it('returns available endpoints based on filter and config', () => {
    const filter = {
      [EModelEndpoint.openAI]: true,
      [EModelEndpoint.google]: false,
      Mistral: true,
    };
    const expectedEndpoints = [EModelEndpoint.openAI, 'Mistral'];
    expect(getAvailableEndpoints(filter, mockEndpointsConfig)).toEqual(expectedEndpoints);
  });
});

describe('mapEndpoints', () => {
  it('returns sorted available endpoints', () => {
    const expectedOrder = [EModelEndpoint.openAI, EModelEndpoint.google, 'Mistral'];
    expect(mapEndpoints(mockEndpointsConfig)).toEqual(expectedOrder);
  });
});